Não informado. (1974). American Highway and Transportation Monthly. American Association of State Highway and Transportation Officials.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. American Highway and Transportation Monthly. Washington: American Association of State Highway and Transportation Officials, 1974.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. American Highway and Transportation Monthly. American Association of State Highway and Transportation Officials, 1974.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.